20203664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{709}}^1$

素因数の和:867

約数の個数: 40

約数和(自身を含む): 42523320

約数和(自身を除く): 22319656

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 548, 709, 1096, 1418, 1781, 2192, 2836, 3562, 5672, 7124, 9217, 11344, 14248, 18434, 28496, 36868, 73736, 97133, 147472, 194266, 388532, 777064, 1262729, 1554128, 2525458, 5050916, 10101832, 20203664]

約数ペア:

[(1, 20203664), (2, 10101832), (4, 5050916), (8, 2525458), (13, 1554128), (16, 1262729), (26, 777064), (52, 388532), (104, 194266), (137, 147472), (208, 97133), (274, 73736), (548, 36868), (709, 28496), (1096, 18434), (1418, 14248), (1781, 11344), (2192, 9217), (2836, 7124), (3562, 5672)]